While operating, ODN relays emitted noticeable vibrations. To soothe the temperamental Kirayoshi O'Brien, ChiefMiles O'Brien placed his infant in the "pit" in Ops, where he fell asleep. The chief was unsure what exactly in the pit was able to put his otherwise colicky son asleep, suggesting that perhaps it was the pattern of the lights, the hum of the optronic emitters, or the vibrations of the ODN relays. (DS9: "Business as Usual")

Control of Deep Space 9's turbolift control system could be accessed through the station's ODN relays. In said cases, an access signal was typically left behind and could generally be traced back to the source. (DS9: "Crossfire")